Messages in this thread | | | From | Jin Yao <> | Subject | [PATCH v2 0/5] perf report: Support sorting all blocks by cycles | Date | Tue, 15 Oct 2019 13:33:45 +0800 |
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It would be useful to support sorting for all blocks by the sampled cycles percent per block. This is useful to concentrate on the globally hottest blocks.
This patch series implements a new sort option "total_cycles" which sorts all blocks by 'Sampled Cycles%'. The 'Sampled Cycles%' is block sampled cycles aggregation / total sampled cycles
For example,
perf record -b ./div perf report -s total_cycles --stdio
# To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 2M of event 'cycles' # Event count (approx.): 2753248 # # Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles [Program Block Range] Shared Object # ............... .............. ........... .......... ................................................................. .................... # 26.04% 2.8M 0.40% 18 [div.c:42 -> div.c:39] div 15.17% 1.2M 0.16% 7 [random_r.c:357 -> random_r.c:380] libc-2.27.so 5.11% 402.0K 0.04% 2 [div.c:27 -> div.c:28] div 4.87% 381.6K 0.04% 2 [random.c:288 -> random.c:291] libc-2.27.so 4.53% 381.0K 0.04% 2 [div.c:40 -> div.c:40] div 3.85% 300.9K 0.02% 1 [div.c:22 -> div.c:25] div 3.08% 241.1K 0.02% 1 [rand.c:26 -> rand.c:27] libc-2.27.so 3.06% 240.0K 0.02% 1 [random.c:291 -> random.c:291] libc-2.27.so 2.78% 215.7K 0.02% 1 [random.c:298 -> random.c:298] libc-2.27.so 2.52% 198.3K 0.02% 1 [random.c:293 -> random.c:293] libc-2.27.so 2.36% 184.8K 0.02% 1 [rand.c:28 -> rand.c:28] libc-2.27.so 2.33% 180.5K 0.02% 1 [random.c:295 -> random.c:295] libc-2.27.so 2.28% 176.7K 0.02% 1 [random.c:295 -> random.c:295] libc-2.27.so 2.20% 168.8K 0.02% 1 [rand@plt+0 -> rand@plt+0] div 1.98% 158.2K 0.02% 1 [random_r.c:388 -> random_r.c:388] libc-2.27.so 1.57% 123.3K 0.02% 1 [div.c:42 -> div.c:44] div 1.44% 116.0K 0.42% 19 [random_r.c:357 -> random_r.c:394] libc-2.27.so ......
This patch series supports both stdio and tui. And also with the supporting of --percent-limit.
v2: --- Rebase to perf/core branch
Jin Yao (5): perf util: Create new block.h/block.c for block related functions perf util: Count the total cycles of all samples perf report: Sort by sampled cycles percent per block for stdio perf report: Support --percent-limit for total_cycles perf report: Sort by sampled cycles percent per block for tui
tools/perf/Documentation/perf-report.txt | 10 + tools/perf/builtin-annotate.c | 2 +- tools/perf/builtin-diff.c | 41 +-- tools/perf/builtin-report.c | 445 ++++++++++++++++++++++- tools/perf/builtin-top.c | 3 +- tools/perf/ui/browsers/hists.c | 62 +++- tools/perf/ui/browsers/hists.h | 2 + tools/perf/ui/stdio/hist.c | 29 +- tools/perf/util/Build | 1 + tools/perf/util/block.c | 73 ++++ tools/perf/util/block.h | 40 ++ tools/perf/util/hist.c | 11 +- tools/perf/util/hist.h | 15 +- tools/perf/util/sort.c | 5 + tools/perf/util/sort.h | 1 + tools/perf/util/symbol.c | 22 -- tools/perf/util/symbol.h | 24 -- tools/perf/util/symbol_conf.h | 1 + 18 files changed, 694 insertions(+), 93 deletions(-) create mode 100644 tools/perf/util/block.c create mode 100644 tools/perf/util/block.h
-- 2.17.1
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